So, are we cbetting here? I can't find any worse hand that could call (the only draw is the OESD with 67) and I don't think we could make any better hand fold (only 66, 77 I guess). But I also don't like checking behind since I give him a free turn.

We don't always bet to fold out a better hand. Folding out a worse hand for example 9T is good too since it has about 30% equity over us. A worse hand calling is fine too for example 67 for oesd since his equity is less than 40%.

With 3rd pair on a dry board I think it's a bet since we can fold out a tonne of hands and when called we have 5 outs to improve.